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  • Title: Phase II study of etoposide and cisplatin with concurrent twice-daily thoracic radiotherapy followed by irinotecan and cisplatin in patients with limited-disease small-cell lung cancer: West Japan Thoracic Oncology Group 9902.
    Author: Saito H, Takada Y, Ichinose Y, Eguchi K, Kudoh S, Matsui K, Nakagawa K, Takada M, Negoro S, Tamura K, Ando M, Tada T, Fukuoka M, West Japan Thoracic Oncology Group 9902.
    Journal: J Clin Oncol; 2006 Nov 20; 24(33):5247-52. PubMed ID: 17114657.
    Abstract:
    PURPOSE: We initially conducted a randomized phase II study to compare irinotecan and cisplatin (IP) versus irinotecan, cisplatin, and etoposide (IPE) after etoposide and cisplatin (EP) with concurrent twice-daily thoracic radiotherapy (TRT) in limited-disease small-cell lung cancer (LD-SCLC). We amended the protocol to evaluate IP after EP with concurrent twice-daily TRT in a single-arm phase II study because of an unacceptable toxicity in IPE. PATIENTS AND METHODS: Previously untreated patients with LD-SCLC were treated intravenously with etoposide 100 mg/m2 on days 1 through 3 and cisplatin 80 mg/m2 on day 1 with concurrent twice-daily TRT (1.5 Gy per fraction, a total dose of 45 Gy) beginning on day 2 followed by three cycles of irinotecan 60 mg/m2 on days 1, 8, and 15 and cisplatin 60 mg/m2 on day 1 of a 4-week cycle. RESULTS: Of the 51 patients enrolled, 49 patients were assessable for response and toxicity. The overall response rate and complete response rate were 88% and 41%, respectively. The median survival time for all patients was 23 months. The 2-year and 3-year survival rates were 49% and 29.7%, respectively. The median progression-free survival was 11.8 months. The major toxicities observed were neutropenia (grade 4, 84%), febrile neutropenia (grade 3, 31%), infection (grade 3 to 4, 33%), electrolytes imbalance (grade 3 to 4, 20%), and diarrhea (grade 3 to 4, 14%). CONCLUSION: EP with concurrent twice-daily TRT followed by the consolidation of IP appears to be an active regimen which deserves further phase III testing in patients with LD-SCLC.
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